network-manager interview questions
Top network-manager frequently asked interview questions
Other posts seems to be addressing more complicated network connection issues from the command line.
The Unity panel Network indicator/button doesn't respond too well sometimes - it keeps trying to connect to a network even when i click on "disconnect", stuff like that.
So I want to go command line for the control. I don't like GUIs anyway.
Is there not some simple command line tool which can do something like the following?
wifi connect MyNetworkNameA
wifi disconnect
wifi connect MyNetworkNameB
Source: (StackOverflow)
I have a .ovpn file with my VPN config - it works fine when I do
sudo openvpn --config ~jrg/Documents/vpn-config.ovpn
in the terminal, but I'd like to use Network Manager. How can I do this?
Source: (StackOverflow)
I would like to use NetworkManager, but prefer a keyboard driven window manager that provides as much space on the screen as possible for my code. I just hate that little strip of real estate "trays" take up on my screen. I have tried running nm-* from the command line, but they seam to never work without a tray.
Source: (StackOverflow)
I have only wireless connection, one computer with a connection and 4gb usb .
My second computer has no network connection, because I have deleted it from the software center. However, now I want to re-install it. How can I do that?
Source: (StackOverflow)
restart the network service:
service networking restart
When I give the above command I get something like
stop: Unknown instance:
networking stop/waiting
I would like to know if the network services has restarted or is it showing some errors. if it is an error how to rectify it?
Source: (StackOverflow)
I suspect that the name server provided by my ADSL modem/router is buggy. Whenever I browse to a website for the first time in ubuntu, resolving the domain name takes at least 15 seconds.
To work around that problem, I changed the nameserver configuration in /etc/resolv.conf from 192.168.1.1 (my ADSL modem) to 8.8.8.8 (google's primary DNS). This seems to fix the problem, but unfortunately my changes to /etc/resolv.conf are overwritten by "NetworkManager" at each startup.
What is the proper way to configure the name server IP in ubuntu 10.4?
Source: (StackOverflow)
I'd like to move up and down available wireless access points, setting priorities as we can do in MS Windows. I can't remember to have ever succeded in this since using network-manager. Maybe something with conf files is possible...
I'm not interested in different netowrk managers.
Source: (StackOverflow)
Goal: I want to be able to securely use the internet via my home PC while my notebook is connected to an open hotspot/access point.
I do know that I can use a SSH tunnel/SOCKS proxy, but I don't want to fiddle around with applications (making them use it, if even possible). I guess what I need is an OpenVPN setup, so I'm looking for a detailed guide on how to:
- Install and setup the OpenVPN server
- Setup the OpenVPN client (NetworkManager)
Ubuntu versions this should work on are 10.10 and 11.04.
Source: (StackOverflow)
My router can do port-forwarding based on MAC addresses. That is, a specific MAC will get a specific IP, for which I can configure a set of ports to be forwarded. In order to easily change that set of ports, I'd like to have different connections in the Network manager.
How do I change the MAC address for a network connection?
Source: (StackOverflow)
I used to be able to share my network connection by editing the Auto Eth0 to share with other computers in the Ipv4 section and now I upgraded my laptop to 11.10 .
Now are there no wired connections in the network manager. When I click my connections applet at the top of the tray it also says wired device not managed!
when I type ifconfig -a
daniella@daniella-1001HA:~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 90:e6:ba:83:d6:fc
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:45
eth0:avahi Link encap:Ethernet HWaddr 90:e6:ba:83:d6:fc
inet addr:169.254.13.40 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
Interrupt:45
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlan0 Link encap:Ethernet HWaddr 00:25:d3:90:43:41
inet addr:192.168.0.6 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::225:d3ff:fe90:4341/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:12881 errors:0 dropped:0 overruns:0 frame:0
TX packets:12867 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8851081 (8.8 MB) TX bytes:2343199 (2.3 MB)
Source: (StackOverflow)
I have two VPNs setup on my Ubuntu machine, one using vpnc and one using PPTP. These were both setup using the GNOME network manager interface and work great. However on occasion I need to access this machine remotely - is there a way to connect or disconnect to these VPNs from the command line?
Source: (StackOverflow)
While upgrading today, something caused my wireless network manager to disappear. Not even connecting via wired connection.
This error is being shown by files:
**(nm-applet:2716): WARNING **: Could not initialize NMClient /org/freedesktop/NetworkManager: The name org.freedesktop.NetworkManager was not provided by any .service files
(nm-applet:2716): nm-applet-WARNING **: Error connecting to ModemManager: Error calling StartServiceByName for org.freedesktop.ModemManager1: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Cannot launch daemon, file not found or permissions invalid
(nm-applet:2716): nm-applet-WARNING **: Could not find ShellVersion property on org.gnome.Shell after 5 tries
(nm-applet:2716): nm-applet-WARNING **: Failed to register as an agent: (2) The name org.freedesktop.NetworkManager was not provided by any .service files
Is there a patch I can download through windows and send through to my ubuntu, or is it a case of having to reload everything? I tried running two versions back but still no internet access.
Source: (StackOverflow)
In Ubuntu 14.04 neither sudo service networking restart nor sudo /etc/init.d/networking restart do anything any more. They also both exit with code 1. Something has obviously changed (or half changed) but I can't find what. This obviously causes problems with remote network reconfiguration and tools like Ansible.
$ sudo bash -x /usr/sbin/service networking restart
[sudo] password for wirehive:
++ basename /usr/sbin/service
+ VERSION='service ver. 0.91-ubuntu1'
++ basename /usr/sbin/service
+ USAGE='Usage: service < option > | --status-all | [ service_name [ command | --full-restart ] ]'
+ SERVICE=
+ ACTION=
+ SERVICEDIR=/etc/init.d
+ OPTIONS=
+ '[' 2 -eq 0 ']'
+ cd /
+ '[' 2 -gt 0 ']'
+ case "${1}" in
+ '[' -z '' -a 2 -eq 1 -a networking = --status-all ']'
+ '[' 2 -eq 2 -a restart = --full-restart ']'
+ '[' -z '' ']'
+ SERVICE=networking
+ shift
+ '[' 1 -gt 0 ']'
+ case "${1}" in
+ '[' -z networking -a 1 -eq 1 -a restart = --status-all ']'
+ '[' 1 -eq 2 -a '' = --full-restart ']'
+ '[' -z networking ']'
+ '[' -z '' ']'
+ ACTION=restart
+ shift
+ '[' 0 -gt 0 ']'
+ '[' -r /etc/init/networking.conf ']'
+ which initctl
+ grep -q upstart
+ initctl version
+ case "${ACTION}" in
+ stop networking
stop: Job failed while stopping
+ :
+ exec start networking
start: Job is already running: networking
What is the correct way to restart networking in Ubuntu 14.04 Server remotely?
Source: (StackOverflow)
Since the network manager is troubling me so much I want to replace it (possibly wicd orNM from ppa:volanin).
I do not know how to connect and disconnect to the network through the terminal without using network manager.
I would like a command-line way of managing the network.
Source: (StackOverflow)